MEGR 2156 Portfolio

Assignments

Problem Statement:

Design an automobile wheel for use in "high performance" applications.

This wheel should possess the following qualities:

-ideal strength-to-weight ratio,

-optimal power-to-weight ratio/torque efficiency.

-symmetric weight distribution.

-aerodynamic geometry.

-natural brake cooling capability.

The design must be scalable, such that it may be implemented in a variety of vehicle types.

The wheel will be engineered with some basic assumptions (i.e. standard operating temperature [about 0 deg C to 32 deg C], typical values for torque, friction between the ground and the tire, etc. will be used in the design calculations).

Semester Project Gantt Chart:

Decision Matrix:

In this figure, a rating of 1 (poor) is the worst possible rating, and a rating of 5 (optimal) is the best.

Looking at the evaluation criteria, it can be seen that some criteria are weighted higher than others. This is of course necessary given the relative impact each design consideration will have on the final product. It made sense to preference torque efficiency, since the ultimate goal is high performance. Aerodynamics and brake cooling are next in terms of relative importance. They are both essential characteristics, for they impact the overall performance of the wheel. Design appeal and manufacturability are weighted the lowest for good reason. While they are integral from a marketing/cost point of view, they play a smaller role as far as performance is concerned. Based on this weighting scheme of the evaluation criteria, concept 2 scored the best. Therefore, it is the smartest option for continued development.

Module 1.

Module 2.

Module 3.

Lessons learned:

I learned how to link a downloadable file on a web page In addition, I deepened my understanding of stress analysis.

Comments:

-Website has nice "clean" design; however, the Gantt chart is rather small and consequently hard to read.

-While the decision matrix and accompanying paragraph are detailed and helpful, there should be an additional brief statement explaining how you reached your decision regarding which concept to continue developing.

-Excellent website design and CAD models. You captured your design intent very well.

-It would be ideal if the FRDPARRC tables were displayed right underneath the figures instead of being links.

-The pugh decision matrix is detailed; however, the red coloring makes it slightly unpleasant to read/view. Instead, using softer colors in combination with more than one type of color would be ideal.